Space-block for armatures



(No Model.) H. GEISENHONER.

sPApE BLOGK FOR ARMATURES.

Patented Feb. 16,1897. F131- N ENT R- da I wmmayx \A I HESEEE.

' UNITED STATES" PATENT OFFICE.

HENRY eErsENnoNER, or SCHENECTADY, NEW roan, AssieNon TO THE GENERAL ELEoT ro COMPANY, or NEW YORK.

SPACE-BLOCK FoRARMA'ruaEs.

SPECIFICATION forming part of Letters Patent No. 577,130, dated February 16, 1897.

' Applioationfiled November 20,1896, Serial No. 612,851. (no modeld To aZZ whom) it may curwern: v P

Be it known-that I, HENRYGEISENHGNER, a citizen of theUnited States, residing at Schenectady, county of scheneetadyfstate of New York, have invented certain new and useful Improvements in Space-Blocks for Laminated Cores, (Case No. 489,) of which the following isa specification. I i

This invention relates to dynamo-electric mach nes in which an armature-core is built up in the usual manner with annular iron laminae in layers suitably supported upon an internal support or spider adapted for the purpose.

This invention has particular reference to improved constructions of so-called space.-

blocks, a number or which are'employed be-' tween each. pair of sections in a substantially solid, core built up in sections or bundles of laminae of any desired thickness. These space blocks, which. are somewhat in the shape of a fork, that is, with a main portion which consists of a bar or rod with a transverse portion at one end having a number of arms or projections, are made of brass or other metal cast. in the shape desired. In

this construction where the space-blocks have been made of brass or other metal cast in one piece it has been found that the teeth or projections being brittle aren'o't so durable and having a rough finish do not 'adord smooth surfaces -for ventilation or radiation of heat. To obviatethese objections and at the same time to aii'ord a saving in time, labor, andexpense in c'onstructiomthe teeth or projections, in accordance with this invention, are made of thin strips of metal, and' the main portion of the space-block is formed with slots in which the thin strips are securely fastened.

In the accompanying drawings, Figure 1 illustrates inplan view the location and arrangement of a space-block located between two bundles of laminae. Fig; 2 is a side view showing a space-block constructed in accordance with this invention and applied to a toothed-armature. Fig. 3 is a vertical section through the line m m of Fig. 2. Fig. dis a detail view of one of the teeth or projections detached from the space-block.

The space-block consists of a bar or rod 1, having at one end thereof a transverse porthe whole cast in the shape shown that is,

of a-Tv shape-and forming the main portion of the space-block. The transverse portion 2 is provided with a number of raised parts 3, projecting laterally and each provided with aslot 4. In each slot 4 is inserted one end oi a tooth orlprojectionoof the spaceblock, consisting of a thin strip of metal, as shown in Fig. 4, and secured therein by means of metal, as indicated at 6, fused through a hole 7 atone end of the tooth 5, or the tooth 5 may be secured in place in any other suitable manner. A number of these spaceblocks, constructed as just described, are located between every two sections or bundles of laminae. 8, as shown in Fig. 1, and are secured to one of said bundles of laminae by means of rivets 9, extending through the upper and lower portions of the bar 1 inrivetholes sunk therein and tlfrough the adjacent lamina 10 of the bundle 8.

' The fingers or projections of the spaceblocks are radial to the center of the core, so that ventilating-spacesare provided between each two fingers or projections, as well as between the. separators themselves.

In Fig. 1 a space-block is shown in connection with bundles of" laminae for a smoothwound armature, or one having no iron projections, and in Fig. 2 a space-block is shown as applied to a toothed armature. The fingers or projections of the space-block correspond to or are in-alinement with the projecting armature-teeth 11. By means of this v construction the teeth or projections, being formed of thin strips of metal, are more durable than where they are cast in one piece with the main portion of the space-block, not

"requiring any finishing, as in the case where the, entire space-block is cast in one piece, and, the projections are not only stronger and cheaper in construction, but also'afford smooth surfaces for the ventilation and radiation of-heat. If desired, the bar or rod 1 may be omitted.

The space-block may be used in diflerent forms of ficld-magnetcores and dynamo-electric machines in which cores are'formed with built-up laminated structures for the purpose of -entilation.

IOO

That I claim as new, and desire to secure by Letters Patent of the United States, is

1. A space-block for armature-cores, consisting of a main portion of cast metal, having recesses or seats for the teeth or projections of the space-block, and teeth o l-projections of strips of metal secured to said cast portion, as set forth.

2. In anarmature-core a space-block consisting of a main portion of cast metal formed of a T shape, having recessed portions or seats for the teeth, and teeth formed of thin strips of sheet metal seated and secured in said seats, as set forth.

In an armature-core, the combination with sections built up of laminae, of spaceblocks each consisting of a main cast portion having recesses or seats for the teeth, and teeth of sheet metal secured in saidrecesses or seats, said space-blocks being located between said sections of built-up laminae, and

in contact withadjacent laminze, whereby' ventilating-space is afforded between the inner and outer surfaces of said core, as de scribed.

4. In a laminated armature-core built up of sections, a space-block, comprising a main wardly therefrom to the adjacent section, and

radial to the center of the core, whereby airpassages are aiforded between the inner and outer surfaces of said core.

5. An armature consisting of layers of lami'nze built up into sections or bundles, and space-blocks located between said bundles of laminzeg'said space-blocks consisting of a main portion of cashmetal, and teeth or projections of thin metal secured to said main cast portion, as set forth.

6. A space-blockforalaminated structure, consisting of a main portion of cast metal formed With lateral projections, and teeth or projections formed of strips of sheet metal secured. in said lateral projections, as set forth.

In witness whereof I have hereunto set my hand this 12th day of November, 1896.

v HENRY GElSENIIONER.

- \Vitnesses: I B. B. HULL, C. L. ILWNEs. 

